Sandvik Coromant has developed its CoroMill® MF80 family of inserts. Designed for automotive milling applications in ISO-K and ISO-P materials, the inserts have eight cutting edges, chip protection and optimised micro geometry. In particular, the tools are designed to be ideal for thin-walled components and machine setups with limited stability. The cutting edge is inclined for smooth cutting action and low cutting forces. This gives better security and chip evacuation, as well as a wiper edge for superior surface finish.
CoroMill® MF80’s technology platform is similar to Sandvik Coromant’s existing CoroMill® 345. This new milling concept offers a 40 per cent lighter cutter body with shim protection and high number of inserts for secure and stable machining, even in vibration-prone overhang applications.
With shoulder and face milling applications, cutting tools with 90 degree lead angles are generally preferred because they generate radial cutting forces and, importantly, transfer more cutting energy away from the part. This is especially ideal when machining parts with thinner walls or near-net-shapes. CoroMill® MF80 enables an 89.5 degree approach angle, so the multi-edge cutter can work even closer to the fixture while machining. The near-90 degree angle also reduced axial forces for improved milling on thin wall components and weak fixtures, without vibration and chatter. Key advantages here include improved accuracy and machine utilisation, but also ensures longer tool life with less scrap.
CoroMill® MF80 can benefit OEMs’ light weighting applications, with longer-lasting and more productive performance when machining heavier materials like ISO-K NCIs, Inconel or grey irons, forged steels and cobalt chrome. These advantages can also prove essential in helping manufacturers produce vehicles that meet stringent CO2 emission regulations while maintaining a lower cost-per-part.